The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2002
Filed:
Aug. 16, 2000
Stephan Vrudny, Grayslake, IL (US);
John C. Byrne, Lake Villa, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A display back lighting system ( ) includes a light pipe ( ) that is mounted above a printed circuit board ( ) and below a liquid crystal display ( ). The backplane ( ) of the light pipe has a surface area adapted to accommodate the liquid crystal display. The backplane of the light pipe is substantially perpendicular to a light emitted from a light source ( ) mounted on the printed circuit board. An entrance lens ( ) on the light pipe receives light from the light source and directs the light towards a reflecting lens ( ). The reflecting lens optimally has an elliptical shape that reflects light from the entrance lens toward the backplane of the light pipe. In this manner, a backlight is provided for a liquid crystal display.